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Analysis
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max time kernel
93s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
15/01/2025, 05:01
General
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Target
984ab793faaa2379ee819842806aab13c7e1634736b4db55289f48c78731c331.exe
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Size
783KB
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MD5
2182bd1be840a69475bbc68f9d607072
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SHA1
c887cf077e1c295f3bafa10296866be598ac55f1
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SHA256
984ab793faaa2379ee819842806aab13c7e1634736b4db55289f48c78731c331
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SHA512
33dd27d5fac2a04c715b41e5b3f44df5aadde09d1f15d3a8892f0816f667871be98b1d6930ae513f0ed4095c8050a71db3aa51186b99bb671fd8ad33fc30fcb8
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SSDEEP
12288:mqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:m+OQbpbgsFdAyQvzSqaq8q
Malware Config
Signatures
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Dcrat family
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Process spawned unexpected child process 9 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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UAC bypass 3 TTPs 3 IoCs
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DCRat payload 5 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 1 IoCs
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Adds Run key to start application 2 TTPs 9 IoCs
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops file in System32 directory 16 IoCs
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Drops file in Windows directory 8 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
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Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 19 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 2 IoCs
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System policy modification 1 TTPs 3 IoCs
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Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\984ab793faaa2379ee819842806aab13c7e1634736b4db55289f48c78731c331.exe"C:\Users\Admin\AppData\Local\Temp\984ab793faaa2379ee819842806aab13c7e1634736b4db55289f48c78731c331.exe"1⤵
- UAC bypass
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\System32\Groupinghc\dwm.exe"C:\Windows\System32\Groupinghc\dwm.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Windows\LiveKernelReports\Registry.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\lpremove\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\All Users\Microsoft\WinMSIPC\Server\spoolsv.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Windows\System32\themecpl\MusNotification.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\PerfLogs\unsecapp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\DigitalLocker\en-US\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\System32\Groupinghc\dwm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "984ab793faaa2379ee819842806aab13c7e1634736b4db55289f48c78731c331" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\984ab793faaa2379ee819842806aab13c7e1634736b4db55289f48c78731c331.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\mtxoci\dllhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
783KB
MD52182bd1be840a69475bbc68f9d607072
SHA1c887cf077e1c295f3bafa10296866be598ac55f1
SHA256984ab793faaa2379ee819842806aab13c7e1634736b4db55289f48c78731c331
SHA51233dd27d5fac2a04c715b41e5b3f44df5aadde09d1f15d3a8892f0816f667871be98b1d6930ae513f0ed4095c8050a71db3aa51186b99bb671fd8ad33fc30fcb8
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Filesize
783KB
MD5346b613724ce0d309f2e17d7d7a3c9c1
SHA1b5ac7de972b9328c83a0203b341f7e2660d394d4
SHA256cc010a5b4f9bd197fb99ce2bbbca53398f5774997ebf042146c1f61ce2d52d8a
SHA512b40c93d58204d77e26b98e8dfc80703e9809ffde0f82b739fb2f5efa6e5a2750be6e5e192a3e7410358d2b9b3ea226d99445578a69a5a31749b4e4db28fb4090
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Filesize
783KB
MD55fa6b3cf59a98abe425bf5cff9d1e927
SHA1eedee72d5be0c815d72d1b3365f16a2c49e5d6f7
SHA256c6cd1d57680fc721c634bc0c78b82fcf18e11d4a874959d2dcc55f6c5b3523d1
SHA512a220ebeabc8c4c7bd80dc18c66546eeb74f8223bf65abc1c308ed0794879fa57f8bbfb8b544501e21afa952d01a03f2fd18f37e9abb209fb97f57f9255607bba
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Filesize
808KB
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Filesize
32KB
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Filesize
32KB
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Filesize
48KB
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Filesize
40KB
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Filesize
32KB
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Filesize
32KB
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Filesize
40KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
8KB
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Filesize
48KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
8KB
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Filesize
32KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
808KB
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Filesize
10.8MB